2023 Chevrolet Colorado: engine overheating

5 of the 142 complaints about the 2023 Chevrolet Colorado describe engine overheating.

owner complaints: 5
of this car's complaints: 4%
recalls: 0

Is there a fix? 78 service bulletins cover this area of the car. See below

Engine overheating by model year

2025
1
2024
11
2023
5
2022
1
2021
1
2020
1
2018
1
2017
2
2016
2
2015
1
2012
1
2007
2
2005
5
2004
8

What owners say

Filed Apr 9, 2026 · Engine · CA

Coolant leak, upper radiator hose, TSB issued PIT6494A over $500 repair. Not covered under any warranty.

Filed Mar 6, 2026 · Engine · NY

The upper radiator hose on some huge percentage of these trucks fail (mine has failed at just over 20K miles). You can check the Colorado Chevy forum, youtube, etc., et al, and find plenty of instances where this has failed. As this is the cooling system, it can cause the engine to overheat and potentially ruin the engine. The flaw seems to be an engineering issue with the rubber seal they use (instead of a high quality o-ring) to seal the upper hose to the radiator. Additionally, since this can cause engine failure it should be addressed immediately. Instead, my local Chevy dealer, since its not a recall item, said they could schedule a time next week for me to LEAVE the truck and then they would get to it in 7-10 days. This is extremely unfair to the consumer who depends on these vehicles. This should absolutely be a recall item. You can find 1000's of examples online and if you can pull GM repair data, I'm sure you'll find 1000's more.

Filed Jan 26, 2026 · TX

The upper radiator hose on some huge percentage of these trucks fail (mine has failed at just over 37K miles). You can check the Colorado Chevy forum, youtube, etc., et al, and find plenty of instances where this has failed. As this is the cooling system, it can cause the engine to overheat and potentially ruin the engine. The flaw seems to be an engineering issue with the rubber seal they use (instead of a high quality o-ring) to seal the upper hose to the radiator. Additionally, since this can cause engine failure it should be addressed immediately. Instead, my local Chevy dealer, since its not a recall item, said they could schedule a time next week for me to LEAVE the truck and then they would get to it in 7-10 days. This is extremely unfair to the consumer who depends on these vehicles. This should absolutely be a recall item. You can find 1000's of examples online and if you can pull GM repair data, I'm sure you'll find 1000's more

Filed Jan 9, 2026 · Transmission · NY

The upper radiator hose and gasket on numerous Colorado and Canyon trucks have failed prematurely. Mine has failed at 31k miles. Radiator hose leaks can cause engine overheating and failures while on roadways. Additional issues of leaking coolant on roadways and into the environment. Vehicle is scheduled to be viewed by dealership. Symptom which lead to diagnosing problems included rushing fluid sounds as air was introduced to the coolant line as well as an observable leak on the driver side where the radiator hose connects to the radiator.

Filed May 5, 2025 · Engine · CT

Upper radiator hose rubber grommet failing at 22k. Had a severe coolant leak coming from top radiator hose blowing back onto hot motor which could have turned into a fire quickly. I was lucky! A lot of GMC Canyons and Colorado's are all reporting the same problem around 22k miles. It is currently at Grossman Chevy Old Saybrook, CT for repair.